US Air Force Chief of Staff Gen. Charles Q. Brown stated that he is not losing any sleep now over China’s expanding fleet of J-20 stealth fighters. Brown’s remarks echo comments that Gen. Kenneth Wilsbach, head of Pacific Air Forces, made about the threat posed by the J-20.Brown and Wilsbach offered their views on the J-20 while speaking separately at the Air & Space Force Association’s 2022 Air, Space, and Cyber Conference.Wilsbach stated, “It’s not anything to lose a lot of sleep over. Certainly, we’re watching them closely and seeing how they felt and how they operate them.”US Air Force Chief of Staff Brown had subsequently said, “Well, I’m like Gen. Wilsbach. [The J-20 is] not something to lose a lot of sleep over, but I’m gonna pay attention to it.”Wilsbach explained his comments by saying that the US Air Force has “had a limited opportunity to assess it [the J-20], but it seems ok.” He added that after “some recent close engagements we had with our 5th gen jets and some of their J-20s” in the Pacific region, the US Air Force had “learned a lot from that,” but that “it is nothing frankly that I would worry too much about.”This largely reflects remarks that Wilsbach made back in March during an online talk hosted by the Air & Space Force Association’s Mitchell Institute for Aerospace Studies.